Zimmermann studied at the Vienna University of Economics and Business, before completing her degree at the Dolmetschinstitut Wien.

In April 2009 she changed to the Austrian national public service broadcaster ORF, where she got headhunted while an ATV program presentation.

In July 2011, Cathy Zimmermann announced, that she will leave the ORF Niederösterreich at the end of the year.

In the future, Zimmermann wants to devote her time more to enter- and infotainment, as the news but she still want to host some shows.

She will play the leading role "Jane" in the upcoming apocalyptic webtv series "after hell" which is an Austrian, English and American production including the two American actors Dirk Benedict and Richard Hatch.